13155411555 has 64 divisors (see below), whose sum is σ = 27476144640. Its totient is φ = 5887728000.

The previous prime is 13155411517. The next prime is 13155411569. The reversal of 13155411555 is 55511455131.

13155411555 is a `hidden beast` number, since 13 + 1 + 55 + 41 + 1 + 555 = 666.

It is not a de Polignac number, because 13155411555 - 2¹⁰ = 13155410531 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 321421 + ... + 360030.

It is an arithmetic number, because the mean of its divisors is an integer number (429314760).

Almost surely, 2^13155411555 is an apocalyptic number.

13155411555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13155411555 is an abundant number, since it is smaller than the sum of its proper divisors (14320733085).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13155411555 is a wasteful number, since it uses less digits than its factorization.

13155411555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681489 (or 681483 counting only the distinct ones).

The product of its digits is 37500, while the sum is 36.

Adding to 13155411555 its reverse (55511455131), we get a palindrome (68666866686).

The spelling of 13155411555 in words is "thirteen billion, one hundred fifty-five million, four hundred eleven thousand, five hundred fifty-five".